Importance of a One Health approach in advancing global health security and the Sustainable Development Goals.

The One Health approach supports global health security by improving coordination, collaboration and communication at the human-animal-environment interface to address shared health threats such as zoonotic diseases, antimicrobial resistance, food safety and others. Over the past decade, country after country has implemented the One Health approach and demonstrated recognised benefits. However, in order to build sustainability of One Health in these efforts, One Health champions and implementers need to collect and provide government decision-makers with country-level data on One Health's impact to help justify policy decisions and resource allocations. Due to the broad, often seemingly all encompassing, nature of One Health in promoting synergies of multiple disciplines and sectors, the One Health community has faced difficulties in determining specific One Health impact indicators for formally evaluating One Health successes. In this paper, the author a) briefly reviews the ongoing commentary on the recognised benefits of the implementation of a One Health approach in the global health security context, b) discusses challenges in measuring the impact of One Health, and c) proposes possible solutions for evaluating the impact of One Health on global health security.